Atomic Kitten are an British girl group formed in Liverpool in 1998 and put together by Orchestral Manoeuvres in the Dark (OMD) frontman Andy McCluskey, who served as a principal songwriter during their early years. The original line-up consisted of Kerry Katona, Liz McClarnon and Heidi Range. Range was later replaced by Natasha Hamilton and eventually went on to join Sugababes.

The group’s debut album Right Now was released in October 2000 and peaked at number 39 in the UK. After four top ten singles, Katona quit the group and was replaced by former Precious singer Jenny Frost. “Whole Again” (recorded before Katona left), their next single, became their most successful song when it topped the UK singles chart for four weeks and became the 13th best-selling single of the 2000s. The group re-released their debut album, with some tracks re-recorded with Frost’s vocals. In the UK, the album hit number one, going double platinum after selling over 600,000 copies.

Between 2002 and 2004, the group released a further two studio albums, Feels So Good (which also went double platinum in the UK) and Ladies Night, and a greatest hits album before announcing a break following their 2004 tour.

After making sporadic appearances in 2006 and 2008, it was announced that McClarnon, Hamilton, and Katona would reunite for the ITV2 series The Big Reunion, alongside five other pop groups of their time: B*Witched, Five, 911, Liberty X and Honeyz. Frost was unable to take part in the comeback because of her pregnancy.

Katona left the group for the second time in December 2017, leaving Hamilton and McClarnon to continue as a duo.